JPS60201939A - Container fold forming device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a container fold forming apparatus for forming folds of a predetermined shape on a container.

BACKGROUND ART Conventionally, when filling a container with a filling liquid such as a soft drink, the filling liquid is heated to a high temperature for the purpose of sterilization. Even in this type of high-temperature filling, it is necessary to seal the container immediately after filling with the filling liquid, but with soft containers such as paper containers, when the volume decreases as the filling liquid cools, the container It becomes as if a dent is formed in the.

If the dents that occur in the container are naturally formed, they will become irregular dents that will spoil the beauty of the container. The cylindrical container is regularly recessed into a hexagonal column by forming six equally spaced folds along its axis.

In order to form the above-mentioned 6 wooden folds in the above-mentioned container, 2.
Forming six folds in advance on the blank sheet of the container so that it can be easily folded from the folds,
A container is formed from the blank sheet, but in general, it is difficult to form regular depressions along the fold by simply forming folds in the blank sheet, so the filling liquid inside the container is difficult to form. Is it necessary to fold the above-mentioned folds and apply a custom fold to the folds before filling the container?6 In the case of the above-mentioned hexagonal container, the conventional fold-forming device for the container is
A hexagonal prism member is inserted into the container, and a roller corresponding to each of the six planes of the hexagonal prism is pressed from the outside of the container to the outer circumferential surface of the container to the flat surfaces of the hexagonal prism, thereby eliminating the creases. If the fold is not formed on the blank sheet or the blank sheet is not folded, the fold is formed directly, but in this type of conventional device, it is necessary to provide six rollers depending on the shape of the hexagonal prism. At the same time, an operating mechanism was required to operate the bristles, making the structure complicated.

In view of such circumstances, the present invention utilizes atmospheric pressure by inserting a support member of a desired shape, for example, approximately hexagonal, into a container, sealing the container with 7 g of support, and introducing negative pressure. To provide a fold forming device for a container, which can easily form a desired fold with a simple configuration by pressing the outer peripheral surface of the container against a hexagonal support member. It is.

[A for this purpose] ＼Explaining the details of the embodiment, in FIGS.
The containers 1 are removably fitted into the container 2, and the folds 3 are pre-formed along the axial direction at six equally spaced positions in the circumferential direction of the container 2. It is being transported intermittently.

Although not shown, a direction regulating device for positioning the container l at a predetermined rotational angle position is provided at a required position of the conveyor 4, and a fold line of the container according to the present invention is provided at a position downstream of this direction regulating device. A forming device 5 is provided. The above-mentioned direction regulating device may be of various conventionally known configurations, for example, a mark provided at a predetermined position on the bottom of the container 1 is detected by a phototube from below the shaft of the cylindrical holder 2 while the container 1 is being rotated, and the phototube detects the mark. Since it is possible to use a device that stops the rotation of the container 1 upon detection, a detailed explanation thereof will be omitted.

The container fold forming device 5 includes a support rod 6 disposed directly along each container 1 arranged in a horizontal line perpendicular to the transport direction of the containers 1 at a stop position of the containers 1; It is provided with a support member 7 disposed directly above each container l and aligned with the axis of each container, and each support member 7 is attached to the lower part of the support rod 6 so as to be able to move up and down and not rotate. It is biased downward by a spring 8.

1- Both sides of the support forest 6 are connected to lifting rods 10 (only the left lifting rod 10 is shown in FIG. 1) provided on the machine frame 9 so as to be able to rise and fall freely, and the lower end of each lifting rod lO is connected to the lifting rod 10 that can be raised and lowered freely. conveyor 3
It is connected to a support rod it placed at the bottom of the. A cylinder device 12 is connected to the center of this support rod 11, and the cylinder device 12 raises and lowers the support members 7 via the support rod 11, the lifting rod 10, and the support rod 6, and each support member 7 is moved into a container. It is possible to insert it inside.

As shown in FIG. 3, the supporting member 7 has a generally hexagonal cross-sectional shape, and has four portions 15 formed on each plane of the hexagon, and the axial tops between the four portions 15. A support portion 1B is used to support the inner surface of the container l. A negative pressure passage 17 formed in the shaft portion of the support member 7 is opened in each recess 15 and communicated with a negative pressure source via a solenoid valve (not shown). Further, a sealing member is provided above the support member 7 to close the opening of the container 1 and seal the container 1 when the support member 7 is inserted into the container 1.

In the above configuration, when the container l is supplied to the container fold forming device 5 and stopped with its rotational direction aligned in a desired direction by a direction regulating device (not shown), the cylinder device 12 is moved to each of the above-mentioned supports. The member 7 is lowered and the supporting member 7 is inserted into the container l, and the container 1 is sealed by the sealing member 18 provided on the upper part of the supporting member 7.
to be sealed. In this state, the fold 3 formed on the container 1 and the support part 16 provided on the support member 7 are adjacent to each other and face each other.

The support member 7 is inserted into the container l and the seal member 18
When the container L is sealed, a solenoid valve (not shown) is activated.
Negative pressure is introduced into the container l via the negative pressure passage 17. Then, the outer peripheral surface of the container l is pressed against the support member 7 by atmospheric pressure.
The surface of the container l
The fold line 3 formed in is folded along the support portion IB of the support member 7, and the fold line 3 is subjected to a regular fold.

When a required period of time has elapsed after the negative pressure was introduced into the container 1, the flow path of the solenoid valve is switched and atmospheric air is introduced into the container 1, which causes the container 1 to return to its original state due to its own elasticity. It will return to the state of. Thereafter, when the support member 7 is lifted and discharged from the container l, the container l is intermittently advanced by the conveyor 4, and the next new container l is supplied to a position directly below each support member 7. The same operation as described above is repeated.

In the above embodiment, atmospheric pressure is supplied after introducing negative pressure into the container l, but compressed air may be supplied instead.

Further, in the above-mentioned embodiment, the folds 3 are formed in advance and the custom folds are applied to the folds. A fold may also be formed.

As described above, the container fold forming device of the present invention includes a support member inserted into a container, and a support member provided on the support member to support a portion where a fold is to be formed in the container from the inside of the container. A fold forming device that forms folds using conventional rolls. The effect is that the configuration can be much simplified compared to the previous one.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
The left side view in the figure and FIG. 3 are cross-sectional views taken along the line ■-■ in FIG. 2. l...Container 3...Fold 5...Fold forming device 7...Support member 12...Cylinder device 1B...Support part 17...Negative pressure passage 1
8...Seal member Fig. 1 Fig. 2

Claims (1)

[Claims] a support member inserted into the container; a support portion provided on the support member to support a portion where a fold is to be formed in the container from the inside of the container; a seal member to seal the container; 1. A device for forming creases in a container, comprising: a negative pressure passage for introducing negative pressure into the container.